Characterization of a large subunit catalase truncated by proteolytic cleavage.

Abstract excerpt

The large subunit catalase HPII from Escherichia coli can be truncated by proteolysis to a structure similar to small subunit catalases. Mass spectrometry analysis indicates that there is some heterogeneity in the precise cleavage sites, but approximately 74 N-terminal residues, 189 C-terminal residues, and a 9-11-residue internal fragment, including residues 298-308, are removed. Crystal structure refinement at...

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